No, I would not consider Tulum to be wheel chair friendly. You might be able to do some of it in a WC, but there are many places where you need to walk up stone steps or goes across gravel paths. The path/road from the entry/parking area into the ruins is paved road, but beyond that you are dealing with way pre-handicape access law building methods. I'm not sure you could fit a chair through the entry passage in the city wall???